65820029 has 8 divisors (see below), whose sum is σ = 72545088. Its totient is φ = 59218560.

The previous prime is 65820019. The next prime is 65820049. The reversal of 65820029 is 92002856.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65820029 - 2⁸ = 65819773 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65819977 and 65820004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65820019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29777 + ... + 31910.

It is an arithmetic number, because the mean of its divisors is an integer number (9068136).

Almost surely, 2^65820029 is an apocalyptic number.

It is an amenable number.

65820029 is a deficient number, since it is larger than the sum of its proper divisors (6725059).

65820029 is a wasteful number, since it uses less digits than its factorization.

65820029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61795.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 65820029 is about 8112.9543940540. The cubic root of 65820029 is about 403.7563414098.

The spelling of 65820029 in words is "sixty-five million, eight hundred twenty thousand, twenty-nine".